Screen for car-openings.



I. KOMMERS, JR. SCREEN FOR OAR OPENINGS.

APPLICATION FILED MAR-19, 1909.

Patented Jan. 25, '1910.

UNITED STATES PATENT OFFICE.

ISAAC KOMMERS, JR., OF CHICAGO, ILLINOIS.

SCREEN FOR CAR-OPENINGS.

Application filed March 19, 1909.

To all whom it may concern:

Be it. known that I, ISAAC Konatnns, Jr.,

This invention relates to improvements in screens for ear openings andhas among its salient objects to provide an extremely simple and cheaplyconstructed device the frame vork of which can be stamped from asinpiece of metal; to provide novel clamping devices which not onlysecure the wire mesh of the screen proper in position but also serve atthe same time to stretch the mesh tightly across the frame; to provide aconstruction whereby the frame of the screen will fit closely within thecar opening despite any slight inequalities in manufacture and ingeneral to provide an improved construction of the character referredto.

The invention consists in the matters here inafter described and moreparticularly pointed out in the appended claims.

In the drawings Figure 1 is a fragmentary sectional view of the upperend of a car showing my improved screen secured across the usualventilating opening in the hood. Figs. 2 and 3 are respectivelyfragmentary outside and inside elevations of the screen frame. Fig. t isa perspective view of one of the clamping strips. Fig. is a sectionaldetail view showing the manner of clamping the wire mesh or fabric tothe frame.

Referring to the drawings 1 designates the car body having the usualhood equipped with the window 3 for ventilation. Upon the outer side ofthe hood are secured blocks 4., 4 having extensions L, i which togetherform the casing 5 to which the screen is fastened.

Describing this screen, 6 designates as a whole the frame work thereof,which is, or may be stamped from a single piece ofmetal, and is struckup near its inner edges to form clamping grooves 7, 7 as seen moreclearly in'Fig. 5. There is, of course, one of these grooves at eitherside of the frame, and it is to be noted that they are each slightlyinset from the inner edges of the latter in order to form flanges orstraight edges 8, 8

Specification of Letters Patent.

l l l Patented Jan. 25, 1910.

Serial No. 484,514.

across which the wire mesh or foraminous screen 9 may be stretched.

To fasten this wire screen to the frame 6, and at the same time stretchthe former tightly across the open face of the latter, I provide novelclamping strips .10, 10. These clamping strips each consist of a single.piece of flat metal bent back upon itself to form sides ill, 12, theinner side 12 being curved or bent outwardly to conform to the groove 7.The end portions 13 of the inner side 12 extend substantially parallelwith the opposite side 11. as shown. These strips 10 are each clamped inthe respective grooves 7 by means of a 1i luralityof tln'ough-bolts 14;,the threaded ends of which extend through the outer faces 11 of thestrips, and are provided with nuts 15 whereby the strips may be drawndown into the grooves and there locked.

To secure the wire screen 9 to the frame, it is first stretched acrossthe open face of the latter, the ends of the wire then bent around thecurved faces 12 of the strips and finally turned back between the openedges of the latter as shown in Fig. 5. These strips are then seated intheir respective grooves 7 and the bolts 14; inserted. As the nuts 15are tightenend the clamping strips will of course be drawn downwardlyinto the grooves and the wire screen 9 fastened securely to the frame.At the same time the screen 9 will be drawn tightly over the inner edges8 of the frame in an obvious manner.

The screen when thus assembled may be secured in the casing formed bythe blocks 4;, by means of suitable screws 16 extending through theouter edges of the f nine (5 and into the casing as shown. In order thatthe frame of the screen may tit closely within this casing 5 the upperand vertical edges of the former are bent inwardly at right angles toform flanges 17, while the bottom edge of the frame is bent outwardly toform a hook shaped flange member 18. Vithin this hook shaped flange isseated a rubber washer 19 the lower edge of which projects below theflange and serves to secure a close fit between the frame of the screenand the casing despite any inequalities in manufacture.

lVhile I have herein shown a preferred embodiment of my invention it isapparent that it may be more or less varied in details of constructionwithout in any manner departing from the spirit thereof.

1 claim as my invention:

1. In a screen, the combination with a frame member provided along eachside with a clamping groove, clamping strips seated in the respectivegrooves, each of said strips being bent back upon itself and open at oneside, a foraminous screen having its edges extending across the innerface of the clamping strips and turned back between the sides of thelatter, and means for clamp ing the strips Within the groove whereby thescreen is securely fastened to the frame.

2. In a screen, the combination with a frame member having a clampinggroove at each side thereof, a clamping strip seated in each of saidgrooves, each of said strips being bent back upon itself and open at itsouter edge, a screen stretched across the open face of said frame andhaving its edges extending across the inner sides of said clampingstrips and then turned back between the sides of the latter, and meansfor clamping said strips Within the groove to fasten the screen inposition.

3. In a screen, the combination with a frame member having a curvedgroove in each side thereof, clamping strips seated in the respectivegrooves, each of said strips being bent back upon itself and having itsinner faces curved to conform to the curvature of the groove, a screenextending across the open face of said frame and into said grooves, theends of the screen being inserted between the outer edges of clampingstrips, and means for locking said clamping strips within the grooves toclamp the screen to the frame.

4. In a screen, the combination with a frame member having a groovealong the side thereof, a clamping strip turned back upon itself andseated within said groove, a screen extending across the open face ofsaid frame and into said groove, one end of said screen being turnedback between the outer edges of said clamping strip, and means forclamping the strip within the groove.

ISAAC KOMMERS, JR.

Witnesses: D. J. NORMOYLE,

E. I. BEAGLE.

